Valve for a shower



FIG. 1 is a perspective view of a valve for a shower showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design fo a valve for a shower, as shown. 